已解决 解决代码如下： 关键在于把client.IDcardOCR函数包装成一个promise对象返回，不然得不到返回值，也可以使用async/await。 // 云函数入口文件 const cloud = require('wx-server-sdk') cloud.init() // 导入腾讯云密钥配置文件 const { TENCENTCLOUD_APPID, TENCENTCLOUD_SECRETID, TENCENTCLOUD_SECRETKEY, } = require('./config.js') // const tencentcloud = require("tencentcloud-sdk-nodejs"); const OcrClient = tencentcloud.ocr.v20181119.Client; const models = tencentcloud.ocr.v20181119.Models; const Credential = tencentcloud.common.Credential; const ClientProfile = tencentcloud.common.ClientProfile; const HttpProfile = tencentcloud.common.HttpProfile; // 设置腾讯云密钥 let cred = new Credential(TENCENTCLOUD_SECRETID,TENCENTCLOUD_SECRETKEY); let httpProfile = new HttpProfile(); httpProfile.endpoint = "ocr.tencentcloudapi.com"; let clientProfile = new ClientProfile(); clientProfile.httpProfile = httpProfile; let client = new OcrClient(cred, "ap-guangzhou", clientProfile); let req = new models.IDCardOCRRequest(); // 云函数入口函数 exports.main = async (event, context) => { // 传入参数url let params = `{"ImageUrl":"${event.url}","CardSide":"FRONT"}` req.from_json_string(params); // 需要返回一个Promise对象 return new Promise((resolve,reject)=>{ client.IDCardOCR(req, function (errMsg, response) { if (errMsg) { // console.log(errMsg); reject(errMsg) return; } resolve(response.to_json_string()) // console.log(response.to_json_string()); }); }) }